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Finding the Fourth Proportional to 18,529.81, 25,570.96 and 10,031.72

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Solution

The fourth proportional to 18,529.81, 25,570.96 and 10,031.72 is: 13,843.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,529.81 : 25,570.96 = 10,031.72 : x
  2. Step 2: Convert to fraction form
    18,529.81/25,570.96 = 10,031.72/x
  3. Step 3: Cross multiply
    18,529.81x = 25,570.96 × 10,031.72
  4. Step 4: Simplify right side
    18,529.81x = 256,520,686.26
  5. Step 5: Solve for x
    x = 256,520,686.26/18,529.81
  6. Step 6: Final answer
    x = 13,843.67

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.